VEGFA and eosinophilia-myalgia syndrome: VEGF expression was elevated in healthy controls, in the eutopic endometrium of patients with Ems, and in ectopic lesions sequentially (Di Carlo et al., 2009), and elevated VEGF expression in the serum and PF of patients with EMs may serve as a secondary diagnostic indicator of the disease (Bourlev et al., 2010; Li et al., 2020).